Dictionary.com

sulcus

[ suhl-kuhs ]
/ ˈsʌl kəs /
Save This Word!

noun, plural sul·ci [suhl-sahy]. /ˈsʌl saɪ/.

a furrow or groove.
Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of sulcus

1655–65; Latin: furrow

OTHER WORDS FROM sulcus

sub·sul·cus, noun, plural sub·sul·ci.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for sulcus

British Dictionary definitions for sulcus

sulcus
/ (ˈsʌlkəs) /

noun plural -ci (-saɪ)

a linear groove, furrow, or slight depression
any of the narrow grooves on the surface of the brain that mark the cerebral convolutionsCompare fissure

Word Origin for sulcus

C17: from Latin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for sulcus

sulcus
[ sŭlkəs ]

n. pl. sul•ci (-kī, -sī)

Any of the grooves on the brain surface, bounding the gyri; a fissure.
A long narrow groove or depression, as in an organ or a tissue.

Other words from sulcus

sulcal adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
See Today's Synonym